1. what is the incremental manufacturing cost incurred if the company increases production from 24,500 to 24,501 units? 2. what is the incremental cost incurred if the company increases production and sales from 24,500 to 24,501 units? 3. assume that kubin company produced 24,500 units and expects to sell 24,180 of them. if a new customer unexpectedly emerges and expresses interest in buying the 320 extra units that have been produced by the company and that would otherwise remain unsold, what is the incremental manufacturing cost per unit incurred to sell these units to the customer? 4. assume that kubin company produced 24,500 units and expects to sell 24,180 of them. if a new customer unexpectedly emerges and expresses interest in buying the 320 extra units that have been produced by the company and that would otherwise remain unsold, what incremental selling and administrative cost per unit is incurred to sell these units to the customer?